Full name and model: X260 Laptop (ThinkPad) - Type 20F5
Serial number: PC0K72LG
Machine Type Model: 20F5S8YT00
Motherboard model: 01YT035...

Hi everyone — quick thread in case someone can help.

I desoldered the BIOS chip from a Lenovo X260 and flashed a dump I found in a RAR from this forum. The programmer said the write was successful. After re-soldering the chip the laptop won’t boot: the power LED flashes three times green and nothing else happens. I’m attaching my original dump (read before any changes), the dump I flashed, the programmer log, and photos of the chip/board.

Can someone help with:

• Possible causes of the three-green-blink/no-boot after reflashing?
• Recovery steps I should try first (readback,

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Hi — quick summary of the problem:

I desoldered the BIOS chip from a Lenovo X260, flashed a dump I found in the RAR you posted, and the programmer reported the write as successful. After re-soldering the chip the laptop stopped booting: the power LED flashes three times green and nothing else happens. I’ve attached my original BIOS dump (read before any changes).

Please help with:

1. Diagnosis — what could cause the three-green-blink after reflashing?
2. Recovery — exact first steps I should try (readback, reflash original, checks to make).
3. Supervisor password —

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